firmware: raspberrypi: Report the fw variant during probe

The driver already reported the firmware build date during probe.
The mailbox calls have been extended to also report the variant
 1 = standard start.elf
 2 = start_x.elf (includes camera stack)
 3 = start_db.elf (includes assert logging)
 4 = start_cd.elf (cutdown version for smallest memory footprint).
Log the variant during probe.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>

firmware: raspberrypi: Report the fw git hash during probe

The firmware can now report the git hash from which it was built
via the mailbox, so report it during probe.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>

drivers/firmware/raspberrypi.c

@@ -235,6 +235,15 @@ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
 {
  time64_t date_and_time;
  u32 packet;
+ static const char * const variant_strs[] = {
+ "unknown",
+ "start",
+ "start_x",
+ "start_db",
+ "start_cd",
+ };
+ const char *variant_str = "cmd unsupported";
+ u32 variant;
  int ret = rpi_firmware_property(fw,
  RPI_FIRMWARE_GET_FIRMWARE_REVISION,
  &packet, sizeof(packet));
@@ -244,7 +253,35 @@ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
 
  /* This is not compatible with y2038 */
  date_and_time = packet;
- dev_info(fw->cl.dev, "Attached to firmware from %ptT\n", &date_and_time);
+
+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_FIRMWARE_VARIANT,
+ &variant, sizeof(variant));
+
+ if (!ret) {
+ if (variant >= ARRAY_SIZE(variant_strs))
+ variant = 0;
+ variant_str = variant_strs[variant];
+ }
+
+ dev_info(fw->cl.dev,
+ "Attached to firmware from %ptT, variant %s\n",
+ &date_and_time, variant_str);
+}
+
+static void
+rpi_firmware_print_firmware_hash(struct rpi_firmware *fw)
+{
+ u32 hash[5];
+ int ret = rpi_firmware_property(fw,
+ RPI_FIRMWARE_GET_FIRMWARE_HASH,
+ hash, sizeof(hash));
+
+ if (ret)
+ return;
+
+ dev_info(fw->cl.dev,
+ "Firmware hash is %08x%08x%08x%08x%08x\n",
+ hash[0], hash[1], hash[2], hash[3], hash[4]);
 }
 
 static void
@@ -359,6 +396,7 @@ static int rpi_firmware_probe(struct platform_device *pdev)
  g_pdev = pdev;
 
  rpi_firmware_print_firmware_revision(fw);
+ rpi_firmware_print_firmware_hash(fw);
  rpi_register_hwmon_driver(dev, fw);
  rpi_register_clk_driver(dev);